The world's largest water-solar complementary grid-connected solar project—Longyangxia Water and Light Complementary Phase I and Phase II projects have been put into operation for nearly five years, with a cumulative power generation of 5.344 billion kwh, corresponding to saving 1.704 million tons of standard coal and reducing carbon dioxide emissions by 4.66 million. Tons, effectively improving the local ecological environment.

Longyangxia Water-Solid-Complementary Grid-connected PV Power Station is located in the Yellow River Company Industrial Park of Talatan, Gonghe County, Hainan Prefecture, Qinghai Province, with a total installed capacity of 850 MW and an area of 20.40 square kilometers. It is the largest water in the world. Photonic complementary grid solar power station.

The so-called "water and light complementarity" is to combine solar power stations and hydropower stations into one power source. The biggest advantage of Longyangxia water-solar solar power station is the coordinated operation of hydropower and solar power generation. It is supplemented by water and light, and is sent to the power grid through hydropower regulation. The problem of poor solar power generation stability is solved from the power supply end.

For the Longyangxia Hydropower Station, which is responsible for the first frequency regulation and peaking of the Northwest Power Grid, the water and solar hybrid project has broken the entire cascade joint dispatching pattern that has been formed for many years, and has improved the utilization rate and economy of the power transmission line.

The project relies on Longyangxia Hydropower Station, combined with the characteristics of solar energy resources and solar power generation characteristics, and integrates solar power plants and hydropower stations as “virtual hydropower” as a whole, and controls the unstable zigzag solar power supply to be balanced and high quality through hydropower. , safe and grid-friendly power is sent to the grid. The completion and operation of the project has filled the blank of key technologies for large-scale water and solar complementation at home and abroad, and provided a new energy complementary development model for clean energy.

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